Behind Power BI’s data load and transformation functionality is the M language. In this session you’ll learn what kind of scenarios you’ll need to use the M language as well as its basic syntax. You’ll also see several practical examples of how to use it, for example separating connection details out from queries to make them easy to update; creating and using functions; handling missing or changed data sources; and calling web services.
Introduction to M in Power BI
Chris Webb is an independent consultant specializing in Analysis Services, Power Pivot, Power BI, DAX and MDX. He is a co-author a few books on cube development and the Microsoft BI tools and is writing a book on PowerQuery. He blogs about Microsoft BI at http://cwebbbi.wordpress.com/.